Officials from Organization of the Petroleum Exporting Countries, OPEC and non-member oil producing countries met today in Vienna, Austria, aiming to build support for a plan to reduce output.OPEC sources said, Russia, which is one of the world's top producers, told the gathering that Moscow was still willing to freeze its output levels, if OPEC agreed to cap its production. Sources said, an OPEC-only meeting of officials yesterday were unable to agree on how to implement the deal amid objections by Iran which has been reluctant to even freeze its output levels. The OPEC agreed last month in Algiers to reduce OPEC oil production to between 32.50 million and 33 million barrels per day.